# evanw/webgl-filter

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1,091 stars · 151 forks · JavaScript · MIT

## Links

- GitHub: https://github.com/evanw/webgl-filter
- Homepage: https://evanw.github.io/webgl-filter/
- awesome-repositories: https://awesome-repositories.com/repository/evanw-webgl-filter.md

## Description

This project is a browser-based graphics editor and image processing library that performs visual transformations directly within the web environment. It provides a toolset for loading local image files, applying complex visual effects, and exporting the modified results without requiring server-side data processing.

The library utilizes hardware-accelerated fragment shaders to execute pixel-level operations on the graphics processing unit. By maintaining image data as textures within GPU memory and using an immediate-mode rendering pipeline, the system achieves real-time synchronization between user-defined filter parameters and the visual output displayed on the canvas.

The software supports a range of image adjustments, including contrast modification, tilt-shift effects, and lens defocus simulation. These operations are handled through uniform-driven parameter injection, allowing for high-performance manipulation of digital media files directly on the user device.

## Tags

### Graphics & Multimedia

- [Browser-Based Editors](https://awesome-repositories.com/f/graphics-multimedia/image-editing-processing/image-editors/image-cropping-tools/browser-based-editors.md) — Provides a tool for loading, modifying, and exporting local image files with real-time visual effects rendered directly on the user device.
- [GPU-Accelerated Image Processing Frameworks](https://awesome-repositories.com/f/graphics-multimedia/gpu-accelerated-image-processing-frameworks.md) — Applies complex visual adjustments to images at high frame rates using graphics hardware.
- [GPU-Accelerated Shaders](https://awesome-repositories.com/f/graphics-multimedia/gpu-accelerated-shaders.md) — Executes pixel-level image processing operations in parallel on the graphics hardware to achieve real-time performance for complex visual filters.
- [WebGL](https://awesome-repositories.com/f/graphics-multimedia/image-processing-libraries/webgl.md) — Applies visual filters and image transformations to browser-based media using hardware-accelerated shaders.
- [Image Visual Filters](https://awesome-repositories.com/f/graphics-multimedia/image-visual-filters.md) — Provides hardware-accelerated image filtering, including contrast adjustment, tilt-shift effects, and lens defocus simulation for high-performance visual transformations. ([source](https://github.com/evanw/webgl-filter#readme))
- [Browser-Based Image Processing](https://awesome-repositories.com/f/graphics-multimedia/browser-based-image-processing.md) — Applies complex visual effects and image adjustments directly in the web browser using hardware acceleration for high performance.
- [Texture-Based Data Pipelines](https://awesome-repositories.com/f/graphics-multimedia/graphics-engines-rendering/rendering/systems/3d-graphics-pipelines/texture-mapping-pipelines/texture-based-data-pipelines.md) — Maintains image data within GPU memory as textures to minimize expensive data transfers between the browser and the graphics processor.
- [Image Import and Export](https://awesome-repositories.com/f/graphics-multimedia/image-import-and-export.md) — Enables loading local image files for processing and saving modified results directly to the user's local storage. ([source](https://evanw.github.io/webgl-filter/))
- [Web-Based Graphics Acceleration](https://awesome-repositories.com/f/graphics-multimedia/web-based-graphics-acceleration.md) — Leverages the graphics processing unit to perform real-time image transformations and filter applications on digital media files.

### User Interface & Experience

- [Canvas Rendering Pipelines](https://awesome-repositories.com/f/user-interface-experience/canvas-rendering-engines/canvas-rendering-pipelines.md) — Uses the HTML5 canvas element as a target for drawing processed textures to display the final output directly in the browser.
- [Immediate-Mode Rendering](https://awesome-repositories.com/f/user-interface-experience/immediate-mode-rendering.md) — Redraws the entire image state whenever a filter parameter changes to ensure the visual output remains synchronized with user input.

### Web Development

- [Client-Side Media Processing](https://awesome-repositories.com/f/web-development/client-side-media-processing.md) — Manages the import and export of image files locally while performing visual modifications without uploading data to a server.